<?php
/**
 * Smarty Internal Plugin Function Call Handler
 *
 * @package    Smarty
 * @subpackage PluginsInternal
 * @author     Uwe Tews
 */

/**
 * This class does call function defined with the {function} tag
 *
 * @package    Smarty
 * @subpackage PluginsInternal
 */
class Smarty_Internal_Function_Call_Handler {

	/**
	 * This function handles calls to template functions defined by {function}
	 * It does create a PHP function at the first call
	 *
	 * @param string                   $_name     template function name
	 * @param Smarty_Internal_Template $_template template object
	 * @param array                    $_params   Smarty variables passed as call parameter
	 * @param string                   $_hash     nocache hash value
	 * @param bool                     $_nocache  nocache flag
	 */
	public static function call($_name, Smarty_Internal_Template $_template, $_params, $_hash, $_nocache) {
		if ($_nocache)
		{
			$_function = "smarty_template_function_{$_name}_nocache";
		}
		else
		{
			$_function = "smarty_template_function_{$_hash}_{$_name}";
		}
		if (!is_callable($_function))
		{
			$_code = "function {$_function}(\$_smarty_tpl,\$params) {
    \$saved_tpl_vars = \$_smarty_tpl->tpl_vars;
    foreach (\$_smarty_tpl->smarty->template_functions['{$_name}']['parameter'] as \$key => \$value) {\$_smarty_tpl->tpl_vars[\$key] = new Smarty_variable(\$value);};
    foreach (\$params as \$key => \$value) {\$_smarty_tpl->tpl_vars[\$key] = new Smarty_variable(\$value);}?>";
			if ($_nocache)
			{
				$_code .= preg_replace(array(
											   "!<\?php echo \\'/\*%%SmartyNocache:{$_template->smarty->template_functions[$_name]['nocache_hash']}%%\*/|/\*/%%SmartyNocache:{$_template->smarty->template_functions[$_name]['nocache_hash']}%%\*/\\';\?>!",
											   "!\\\'!"
									   ), array('', "'"), $_template->smarty->template_functions[$_name]['compiled']);
				$_template->smarty->template_functions[$_name]['called_nocache'] = true;
			}
			else
			{
				$_code .= preg_replace("/{$_template->smarty->template_functions[$_name]['nocache_hash']}/", $_template->properties['nocache_hash'], $_template->smarty->template_functions[$_name]['compiled']);
			}
			$_code .= "<?php \$_smarty_tpl->tpl_vars = \$saved_tpl_vars;}";
			eval($_code);
		}
		$_function($_template, $_params);
	}

}

?>
